Home / 100,836.92-139,214.85-89,626.88

Finding the Fourth Proportional to 100,836.92, 139,214.85 and 89,626.88

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Solution

The fourth proportional to 100,836.92, 139,214.85 and 89,626.88 is: 123,738.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,836.92 : 139,214.85 = 89,626.88 : x
  2. Step 2: Convert to fraction form
    100,836.92/139,214.85 = 89,626.88/x
  3. Step 3: Cross multiply
    100,836.92x = 139,214.85 × 89,626.88
  4. Step 4: Simplify right side
    100,836.92x = 12,477,392,655.17
  5. Step 5: Solve for x
    x = 12,477,392,655.17/100,836.92
  6. Step 6: Final answer
    x = 123,738.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.